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Differences Between: [Versions 39 and 311]

   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * True/false
  20   *
  21   * @package mod_lesson
  22   * @copyright  2009 Sam Hemelryk
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   **/
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  /** True/False question type */
  29  define("LESSON_PAGE_TRUEFALSE",     "2");
  30  
  31  class lesson_page_type_truefalse extends lesson_page {
  32  
  33      protected $type = lesson_page::TYPE_QUESTION;
  34      protected $typeidstring = 'truefalse';
  35      protected $typeid = LESSON_PAGE_TRUEFALSE;
  36      protected $string = null;
  37  
  38      public function get_typeid() {
  39          return $this->typeid;
  40      }
  41      public function get_typestring() {
  42          if ($this->string===null) {
  43              $this->string = get_string($this->typeidstring, 'lesson');
  44          }
  45          return $this->string;
  46      }
  47      public function get_idstring() {
  48          return $this->typeidstring;
  49      }
  50      public function display($renderer, $attempt) {
  51          global $USER, $CFG, $PAGE;
  52          $answers = $this->get_answers();
  53          foreach ($answers as $key => $answer) {
  54              $answers[$key] = parent::rewrite_answers_urls($answer);
  55          }
  56          shuffle($answers);
  57  
  58          $params = array('answers'=>$answers, 'lessonid'=>$this->lesson->id, 'contents'=>$this->get_contents(), 'attempt'=>$attempt);
  59          $mform = new lesson_display_answer_form_truefalse($CFG->wwwroot.'/mod/lesson/continue.php', $params);
  60          $data = new stdClass;
  61          $data->id = $PAGE->cm->id;
  62          $data->pageid = $this->properties->id;
  63          $mform->set_data($data);
  64  
  65          // Trigger an event question viewed.
  66          $eventparams = array(
  67              'context' => context_module::instance($PAGE->cm->id),
  68              'objectid' => $this->properties->id,
  69              'other' => array(
  70                      'pagetype' => $this->get_typestring()
  71                  )
  72              );
  73  
  74          $event = \mod_lesson\event\question_viewed::create($eventparams);
  75          $event->trigger();
  76          return $mform->display();
  77      }
  78      public function check_answer() {
  79          global $DB, $CFG;
  80          $formattextdefoptions = new stdClass();
  81          $formattextdefoptions->noclean = true;
  82          $formattextdefoptions->para = false;
  83  
  84          $answers = $this->get_answers();
  85          shuffle($answers);
  86          $params = array('answers'=>$answers, 'lessonid'=>$this->lesson->id, 'contents'=>$this->get_contents());
  87          $mform = new lesson_display_answer_form_truefalse($CFG->wwwroot.'/mod/lesson/continue.php', $params);
  88          $data = $mform->get_data();
  89          require_sesskey();
  90  
  91          $result = parent::check_answer();
  92  
  93          if (empty($data->answerid)) {
  94              $result->noanswer = true;
  95              return $result;
  96          }
  97          $result->answerid = $data->answerid;
  98          $answer = $DB->get_record("lesson_answers", array("id" => $result->answerid), '*', MUST_EXIST);
  99          $answer = parent::rewrite_answers_urls($answer);
 100          if ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto)) {
 101              $result->correctanswer = true;
 102          }
 103          if ($this->lesson->custom) {
 104              if ($answer->score > 0) {
 105                  $result->correctanswer = true;
 106              } else {
 107                  $result->correctanswer = false;
 108              }
 109          }
 110          $result->newpageid = $answer->jumpto;
 111          $result->response  = format_text($answer->response, $answer->responseformat, $formattextdefoptions);
 112          $result->studentanswer = $result->userresponse = $answer->answer;
 113          return $result;
 114      }
 115  
 116      public function display_answers(html_table $table) {
 117          $answers = $this->get_answers();
 118          $options = new stdClass();
 119          $options->noclean = true;
 120          $options->para = false;
 121          $i = 1;
 122          foreach ($answers as $answer) {
 123              $answer = parent::rewrite_answers_urls($answer);
 124              $cells = array();
 125              if ($this->lesson->custom && $answer->score > 0) {
 126                  // if the score is > 0, then it is correct
 127                  $cells[] = '<label class="correct">' . get_string('answer', 'lesson') . " {$i}</label>: \n";
 128              } else if ($this->lesson->custom) {
 129                  $cells[] = '<label>' . get_string('answer', 'lesson') . " {$i}</label>: \n";
 130              } else if ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto)) {
 131                  // underline correct answers
 132                  $cells[] = '<span class="correct">' . get_string('answer', 'lesson') . " {$i}</span>: \n";
 133              } else {
 134                  $cells[] = '<label class="correct">' . get_string('answer', 'lesson') . " {$i}</label>: \n";
 135              }
 136              $cells[] = format_text($answer->answer, $answer->answerformat, $options);
 137              $table->data[] = new html_table_row($cells);
 138  
 139              $cells = array();
 140              $cells[] = '<label>' . get_string('response', 'lesson') . ' ' . $i . '</label>:';
 141              $cells[] = format_text($answer->response, $answer->responseformat, $options);
 142              $table->data[] = new html_table_row($cells);
 143  
 144              $cells = array();
 145              $cells[] = '<label>' . get_string('score', 'lesson') . '</label>:';
 146              $cells[] = $answer->score;
 147              $table->data[] = new html_table_row($cells);
 148  
 149              $cells = array();
 150              $cells[] = '<label>' . get_string('jump', 'lesson') . '</label>:';
 151              $cells[] = $this->get_jump_name($answer->jumpto);
 152              $table->data[] = new html_table_row($cells);
 153  
 154              if ($i === 1){
 155                  $table->data[count($table->data)-1]->cells[0]->style = 'width:20%;';
 156              }
 157  
 158              $i++;
 159          }
 160          return $table;
 161      }
 162  
 163      /**
 164       * Updates the page and its answers
 165       *
 166       * @global moodle_database $DB
 167       * @global moodle_page $PAGE
 168       * @param stdClass $properties
 169       * @return bool
 170       */
 171      public function update($properties, $context = null, $maxbytes = null) {
 172          global $DB, $PAGE;
 173          $answers  = $this->get_answers();
 174          $properties->id = $this->properties->id;
 175          $properties->lessonid = $this->lesson->id;
 176          $properties->timemodified = time();
 177          $properties = file_postupdate_standard_editor($properties, 'contents', array('noclean'=>true, 'maxfiles'=>EDITOR_UNLIMITED_FILES, 'maxbytes'=>$PAGE->course->maxbytes), context_module::instance($PAGE->cm->id), 'mod_lesson', 'page_contents', $properties->id);
 178          $DB->update_record("lesson_pages", $properties);
 179  
 180          // Trigger an event: page updated.
 181          \mod_lesson\event\page_updated::create_from_lesson_page($this, $context)->trigger();
 182  
 183          // need to reset offset for correct and wrong responses
 184          $this->lesson->maxanswers = 2;
 185          for ($i = 0; $i < $this->lesson->maxanswers; $i++) {
 186              if (!array_key_exists($i, $this->answers)) {
 187                  $this->answers[$i] = new stdClass;
 188                  $this->answers[$i]->lessonid = $this->lesson->id;
 189                  $this->answers[$i]->pageid = $this->id;
 190                  $this->answers[$i]->timecreated = $this->timecreated;
 191              }
 192  
 193              if (!empty($properties->answer_editor[$i]) && is_array($properties->answer_editor[$i])) {
 194                  $this->answers[$i]->answer = $properties->answer_editor[$i]['text'];
 195                  $this->answers[$i]->answerformat = $properties->answer_editor[$i]['format'];
 196              }
 197  
 198              if (!empty($properties->response_editor[$i]) && is_array($properties->response_editor[$i])) {
 199                  $this->answers[$i]->response = $properties->response_editor[$i]['text'];
 200                  $this->answers[$i]->responseformat = $properties->response_editor[$i]['format'];
 201              }
 202  
 203              // we don't need to check for isset here because properties called it's own isset method.
 204              if ($this->answers[$i]->answer != '') {
 205                  if (isset($properties->jumpto[$i])) {
 206                      $this->answers[$i]->jumpto = $properties->jumpto[$i];
 207                  }
 208                  if ($this->lesson->custom && isset($properties->score[$i])) {
 209                      $this->answers[$i]->score = $properties->score[$i];
 210                  }
 211                  if (!isset($this->answers[$i]->id)) {
 212                      $this->answers[$i]->id =  $DB->insert_record("lesson_answers", $this->answers[$i]);
 213                  } else {
 214                      $DB->update_record("lesson_answers", $this->answers[$i]->properties());
 215                  }
 216                  // Save files in answers and responses.
 217                  $this->save_answers_files($context, $maxbytes, $this->answers[$i],
 218                          $properties->answer_editor[$i], $properties->response_editor[$i]);
 219              } else if (isset($this->answers[$i]->id)) {
 220                  $DB->delete_records('lesson_answers', array('id'=>$this->answers[$i]->id));
 221                  unset($this->answers[$i]);
 222              }
 223          }
 224          return true;
 225      }
 226  
 227      public function stats(array &$pagestats, $tries) {
 228          $temp = $this->lesson->get_last_attempt($tries);
 229          if ($this->properties->qoption) {
 230              $userresponse = explode(",", $temp->useranswer);
 231              foreach ($userresponse as $response) {
 232                  if (isset($pagestats[$temp->pageid][$response])) {
 233                      $pagestats[$temp->pageid][$response]++;
 234                  } else {
 235                      $pagestats[$temp->pageid][$response] = 1;
 236                  }
 237              }
 238          } else {
 239              if (isset($pagestats[$temp->pageid][$temp->answerid])) {
 240                  $pagestats[$temp->pageid][$temp->answerid]++;
 241              } else {
 242                  $pagestats[$temp->pageid][$temp->answerid] = 1;
 243              }
 244          }
 245          if (isset($pagestats[$temp->pageid]["total"])) {
 246              $pagestats[$temp->pageid]["total"]++;
 247          } else {
 248              $pagestats[$temp->pageid]["total"] = 1;
 249          }
 250          return true;
 251      }
 252  
 253      public function report_answers($answerpage, $answerdata, $useranswer, $pagestats, &$i, &$n) {
 254          $answers = $this->get_answers();
 255          $formattextdefoptions = new stdClass(); //I'll use it widely in this page
 256          $formattextdefoptions->para = false;
 257          $formattextdefoptions->noclean = true;
 258          $formattextdefoptions->context = $answerpage->context;
 259  
 260          foreach ($answers as $answer) {
 261              $answer = parent::rewrite_answers_urls($answer);
 262              $answertext = format_text($answer->answer, $answer->answerformat, $formattextdefoptions);
 263              $correctresponsetext = html_writer::div(get_string('correctresponse', 'lesson'), 'badge badge-success');
 264              if ($this->properties->qoption) {
 265                  if ($useranswer == null) {
 266                      $userresponse = array();
 267                  } else {
 268                      $userresponse = explode(",", $useranswer->useranswer);
 269                  }
 270                  if (in_array($answer->id, $userresponse)) {
 271                      // make checked
 272                      $checkboxelement = "<input readonly=\"readonly\" disabled=\"disabled\" name=\"answer[$i]\" checked=\"checked\" type=\"checkbox\" value=\"1\" />";
 273                      if (!isset($answerdata->response)) {
 274                          if ($answer->response == null) {
 275                              if ($useranswer->correct) {
 276                                  $answerdata->response = get_string("thatsthecorrectanswer", "lesson");
 277                              } else {
 278                                  $answerdata->response = get_string("thatsthewronganswer", "lesson");
 279                              }
 280                          } else {
 281                              $answerdata->response = format_text($answer->response, $answer->responseformat, $formattextdefoptions);
 282                          }
 283                      }
 284                      if (!isset($answerdata->score)) {
 285                          if ($this->lesson->custom) {
 286                              $answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
 287                          } elseif ($useranswer->correct) {
 288                              $answerdata->score = get_string("receivedcredit", "lesson");
 289                          } else {
 290                              $answerdata->score = get_string("didnotreceivecredit", "lesson");
 291                          }
 292                      }
 293                  } else {
 294                      // unchecked
 295                      $checkboxelement = "<input type=\"checkbox\" readonly=\"readonly\" name=\"answer[$i]\" value=\"0\" disabled=\"disabled\" />";
 296                  }
 297                  $answercontent = html_writer::label($checkboxelement . ' ' . $answertext, null);
 298                  if (($answer->score > 0 && $this->lesson->custom) || ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto) && !$this->lesson->custom)) {
 299                      $data = html_writer::div($answercontent, 'text-success') . $correctresponsetext;
 300                  } else {
 301                      $data = $answercontent;
 302                  }
 303              } else {
 304                  if ($useranswer != null and $answer->id == $useranswer->answerid) {
 305                      // make checked
 306                      $checkboxelement = "<input  readonly=\"readonly\" disabled=\"disabled\" name=\"answer[$i]\" checked=\"checked\" type=\"checkbox\" value=\"1\" />";
 307                      if ($answer->response == null) {
 308                          if ($useranswer->correct) {
 309                              $answerdata->response = get_string("thatsthecorrectanswer", "lesson");
 310                          } else {
 311                              $answerdata->response = get_string("thatsthewronganswer", "lesson");
 312                          }
 313                      } else {
 314                          $answerdata->response = format_text($answer->response, $answer->responseformat, $formattextdefoptions);
 315                      }
 316                      if ($this->lesson->custom) {
 317                          $answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
 318                      } elseif ($useranswer->correct) {
 319                          $answerdata->score = get_string("receivedcredit", "lesson");
 320                      } else {
 321                          $answerdata->score = get_string("didnotreceivecredit", "lesson");
 322                      }
 323                  } else {
 324                      // unchecked
 325                      $checkboxelement = "<input type=\"checkbox\" readonly=\"readonly\" name=\"answer[$i]\" value=\"0\" disabled=\"disabled\" />";
 326                  }
 327                  $answercontent = html_writer::label($checkboxelement . ' ' . $answertext, null);
 328                  if (($answer->score > 0 && $this->lesson->custom) || ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto) && !$this->lesson->custom)) {
 329                      $data = html_writer::div($answercontent, 'text-success') . $correctresponsetext;
 330                  } else {
 331                      $data = $answercontent;
 332                  }
 333              }
 334              if (isset($pagestats[$this->properties->id][$answer->id])) {
 335                  $percent = $pagestats[$this->properties->id][$answer->id] / $pagestats[$this->properties->id]["total"] * 100;
 336                  $percent = round($percent, 2);
 337                  $percent .= "% ".get_string("checkedthisone", "lesson");
 338              } else {
 339                  $percent = get_string("noonecheckedthis", "lesson");
 340              }
 341  
 342              $answerdata->answers[] = array($data, $percent);
 343              $answerpage->answerdata = $answerdata;
 344          }
 345          return $answerpage;
 346      }
 347  }
 348  
 349  class lesson_add_page_form_truefalse extends lesson_add_page_form_base {
 350  
 351      public $qtype = 'truefalse';
 352      public $qtypestring = 'truefalse';
 353      protected $answerformat = LESSON_ANSWER_HTML;
 354      protected $responseformat = LESSON_ANSWER_HTML;
 355  
 356      public function custom_definition() {
 357          $this->_form->addElement('header', 'answertitle0', get_string('correctresponse', 'lesson'));
 358          $this->add_answer(0, null, true, $this->get_answer_format());
 359          $this->add_response(0);
 360          $this->add_jumpto(0, get_string('correctanswerjump', 'lesson'), LESSON_NEXTPAGE);
 361          $this->add_score(0, get_string('correctanswerscore', 'lesson'), 1);
 362  
 363          $this->_form->addElement('header', 'answertitle1', get_string('wrongresponse', 'lesson'));
 364          $this->add_answer(1, null, true, $this->get_answer_format());
 365          $this->add_response(1);
 366          $this->add_jumpto(1, get_string('wronganswerjump', 'lesson'), LESSON_THISPAGE);
 367          $this->add_score(1, get_string('wronganswerscore', 'lesson'), 0);
 368      }
 369  }
 370  
 371  class lesson_display_answer_form_truefalse extends moodleform {
 372  
 373      public function definition() {
 374          global $USER, $OUTPUT;
 375          $mform = $this->_form;
 376          $answers = $this->_customdata['answers'];
 377          $lessonid = $this->_customdata['lessonid'];
 378          $contents = $this->_customdata['contents'];
 379          if (array_key_exists('attempt', $this->_customdata)) {
 380              $attempt = $this->_customdata['attempt'];
 381          } else {
 382              $attempt = new stdClass();
 383              $attempt->answerid = null;
 384          }
 385  
 386          // Disable shortforms.
 387          $mform->setDisableShortforms();
 388  
 389          $mform->addElement('header', 'pageheader');
 390  
 391          $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
 392  
 393          $hasattempt = false;
 394          $disabled = '';
 395          if (isset($USER->modattempts[$lessonid]) && !empty($USER->modattempts[$lessonid])) {
 396              $hasattempt = true;
 397              $disabled = array('disabled' => 'disabled');
 398          }
 399  
 400          $options = new stdClass();
 401          $options->para = false;
 402          $options->noclean = true;
 403  
 404          $mform->addElement('hidden', 'id');
 405          $mform->setType('id', PARAM_INT);
 406  
 407          $mform->addElement('hidden', 'pageid');
 408          $mform->setType('pageid', PARAM_INT);
 409  
 410          $i = 0;
 411          $radiobuttons = array();
 412          foreach ($answers as $answer) {
 413              $ansid = 'answerid';
 414              if ($hasattempt) {
 415                  $ansid = 'answer_id';
 416              }
 417  
 418              $answer = lesson_page_type_truefalse::rewrite_answers_urls($answer);
 419              $radiobuttons[] = $mform->createElement('radio', $ansid, null,
 420                  format_text($answer->answer, $answer->answerformat, $options), $answer->id, $disabled);
 421  
 422              $mform->setType($ansid, PARAM_INT);
 423              if ($hasattempt && $answer->id == $USER->modattempts[$lessonid]->answerid) {
 424                  $mform->setDefault($ansid, $attempt->answerid);
 425                  $mform->addElement('hidden', 'answerid', $answer->id);
 426                  $mform->setType('answerid', PARAM_INT);
 427              }
 428              $i++;
 429          }
 430  
 431          $radiogroup = $mform->addGroup($radiobuttons, $ansid, '', array(''), false);
 432          $radiogroup->setAttributes(array('class' => 'answeroptiongroup'));
 433  
 434          if ($hasattempt) {
 435              $this->add_action_buttons(null, get_string("nextpage", "lesson"));
 436          } else {
 437              $this->add_action_buttons(null, get_string("submit", "lesson"));
 438          }
 439  
 440      }
 441  
 442  }